Spacing apparatus.



R. J DAVIS. S'PACING APPARATUS. APPLICATION FILED MAR. i5. 1905.

IIIUI'I l ll Ill TN: NoRms PETERS co., WASHINGTON, z:A

UNITED STATES PATENT OFFICE.

SPACING APPARATUS.

Specification of Letters Patent.

Patented Aug. 7, 1906.

Appiic'ason med March 15,1905. serai No. 250.310.

T0 all whom it may concern,.-

Be it known that I, ROBERT J. DAvrs, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain Improvements in Spacing Apparatus,of which the following is a specification.

This invention is designed to provide improved mechanism for spacingholes formed particularly in punching structural shapes.

The leadingobjects are to provide adjustable stop mechanism that can beoperated withfacility and the minimum liability to error in regulatingthe distances shapes are to bemoved between the several punchingoperations and to obtain a positive adjustment to a close scale thatcannot be varied by slipping or flexibility in the action of theadjustable mechanism.

In machines heretofore employed considerable time is required to makethe necessary adjustments of the parts for effecting the spacing, thereis difliculty in obtaining an exact adjustment, and the parts are notpositively held in the desired positions. My invention is designed toovercome these defects and to provide a simple and efficient mechanism.

In the accompanying drawings, Figure 1 represents a plan view of asection of my spacing apparatus. Fig. 2 represents a side elevationthereof. Fig. 3 represents a sectional view taken on the line 3 -3 ofFig. 1. Fig. 4 represents a sectional view taken on the line 4 4 ofFig. 1. Fig. 5 represents a sectional view taken on the line 5 5 of Fig.1, and Fig. 6 represents a perspective view of a stop made in accordancewith my invention.

As shown in the drawings, the girders 1 and 1EL provide a track for thetruck 2 and a support for bearings 3, having jcurnaled therein shafts 4,on which are splined rollers 5, the truck acting to move the shape 5a,engaged thereto and supported by, the rollers.

The girder 1 has the rack-bar 6, with vertical serrations 6a secured tothe outer face thereof. A rack-bar 7, having vertical serrations 7 a, ismovably supported by the brackets 8, secured to the girder 1. Anangle-bar 9, supported by the brackets 8, supports stops 10, havingvertical serrations 10a, adapted to be engaged by the serraticns 6aL and7 a, the outer movement of the bar 7 being limited by the shoulders 8ELon the bracket, so that the stops cannot be moved longitudinally betweenthe serrated bars. Cams 11 tive brackets, are turned by levers 13 tomove the bar 7 and clamp thestops 10, having their serrations therebyfirmly engaged by being released by releasing the cams. In order tothrow the levers and cams so as to either clamp or unclamp severalpoints by a single operation, the levers are pivctally connected bystuds 13 with a bar 13". By this arrangement the operation of any one ofthe levers effects the operation of all the and cams simultaneously.

rIhe stops have the projecting ends 10b and 10C, with the vertical faces10d and 10e and the inclined faces 10f and 10g. The faces 10Cl and 10eare unequally distant from the plane parallel thereto passing centrallythrough the stop, so that by reversing a stop an adjustment can beobtained that divides the space occupied bya serration.

Whenthe stops are properly set, the several faces 10GI and 10e aredisposed so that in moving the truck forward a bolt 14, having a limitedvertical movement in the guide 15, carried by the truck, is engaged bythe stops, while in moving backward the inclined face 14a of the boltengages the inclined faces of the respective stops, whereby the bolt isautomatically lifted and assed Without checkin the movement of t etruck.

It will now be understood that by means of a scale or marks placed uponthe bar 6 or 7 to indicate the spacing desired and with the camsreleased the stops can be lifted out of their engagements and placed inthe positions required, while they are positively held by closing thecams, so as to grip them between the bearings formed by the bars 6 and7.

Having described my invention, I claim- 1. In spacing apparatus,bearings having vertical serrations therein, a plurality of stops havingvertical serrations therein, and cams for clamping said stops andbearings together.

2. In spacingapparatus, a stationary bar having vertical serrationstherein, a movable bar having vertical serrations therein, a pluralityof stops having vertical serrations therein registering with theserrations of said bars, and cams for clamping said parts together.

3. In spacing a paratus, a girder, a bearing secured to sai girder, aseries of brackets secured to said (girder, a movable bearin supportedby sai brackets, cams fulcrume the serrations of the bars 6 and 7, thestops levers fulcrumed on studs 12, carried by the respec- IOO on saidbrackets and acting on said movable bearing, and stops clamped by saidbearing.

4. In apparatus of the class described, a girder, a bar having verticalserrations secured to said girder, brackets connected With said girder,a bar having vertical serrations movablysupported on said brackets, aseries of stops having vertical serrations adapted to be engaged by theserrations of said bars, means carried by said girder for supportingsaid stops, and cams Jfor clamping said bars and stops together.

5. In apparatus of the class described, a

pair of girders, a roller supported by said girders, a truck supportedby said girders, a 15 bolt carried by said truck, a series of stops,bars for holding said stops, and cams for clamping said bars and stopstogether.

In testimony whereof I have hereunto set my hand, this 13th day ofMarch, A. I). 1905, zo in the presence of the subscribing Witnesses.

ROBERT J. DAVIS.

Witnesses:

JOHN THIEL, Urn-EY E. CRANE, Jr.

